Blar i NTNU Open på forfatter "Holta, Haavard"
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Adaptive Stabilization and Set-Point Regulation of Linear 2 x 2 Hyperbolic Systems - With Application to Automatic Attenuation of Kick and Loss in Managed Pressure Drilling
Holta, Haavard (Master thesis, 2017)Linear 2 x 2 hyperbolic partial differential equations can be used to describe many real-world problems and have attracted considerable research interest in later years. This thesis considers adaptive set-point regulation ... -
Kick & Loss Detection and Estimation using Distributed Models
Holta, Haavard (Doctoral theses at NTNU;2020:233, Doctoral thesis, 2020)A kick in oil and gas drilling is an unwanted, unexpected leak of oil and gas from the reservoir into the well-bore. This can happen when the surrounding formation pore pressure exceeds the well-bore pressure. A loss of ...